Whoever gets a Black ID or Doom, rip, tear or hell in their ID is Doomguy.
Whoever gets a Red ID or Blast, BJ, wolf or stein in their ID is Blazkowicz.
Whoever gets a Green ID or 04, halo or MK5 or MK6 in their ID is the Master Chief.
Whoever gets a Yellow ID or blow, out, your or ass is Duke Nukem.
Whoever gets an Orange ID or Mesa, HEV, C17 or Lambda in their ID is Gordon Freeman.
Whoever gets a White ID or Sledge, mini or BFE in their ID is Serious sam.